Taper-cut mechanism for hair-cutters



l. S. KAUFMAN.

TAPER CUT MECHANISM FOR HAIR CUTTERS.

APPLICATION FILED AUG-I5, I9I9.

Patented Jan. 4, 1921.

A TTORNEY v I ISAAC S. KAUFMAN, OF NEW YORK, N. Y. I

.TAPEB-CUT MECHANISM FOR HAIR-CUTTEBS.

Specification of Letters I'atent.

Patented Ja1L4, 1921.

Application filed August 15, 1919. Serial No. 311659..

"'1 '0 all '20 I1. am at may concern Be it known that I, ISAAC S. KAFMAN, a citizen of the United States, and resident of the borough andcounty of Bronx, in the city and State of New York, have invented a newand useful Taper-Cut Mechanism for Hair-Cutters, of which the followingis a specification.

The object of the invention is to provide a simple, eflicient, andeasily manufactured taper cut mechanism for hair-cutters. A furtherobject is to enable the inventionto be applied as an attachment toexisting clippers. It has been proposed to provide a hair clipper with aplate beneath for lifting the clipper as it advances, a roller andconnections for positively operating the plate and springs for restoringit. According to this invention a hinged plate is op' erated by theroller through a cam. A restoring spring is connected with the rollerand cam, and housed within the roller.

In the drawing forming a part hereof: Figure 1 is a side elevationillustrating a clipperin use with the invention thereon;

Fig. 2 is a side elevation with the handles broken away, showing thenormal position of the lifter plate;

' Fig. 3 is a bottom plan;

Fig. 4 is an enlarged fragmentary section on the line 4-4 of Fig. 2;

Fig. 5 is a longitudinal section through the attachment; and

Fig. 6 is an elevation of the cam on the end of the roller.

The drawing illustrates a hair-clipper of known construction, comprisinga frame including a bottom comb plate l, a cutter 2 laterally movable onthe bottom plate, a fixed handle 3 and a laterally movable handle 4 foroperating the cutter.

A supplemental frame below and at the back of the main frame is providedfor carrying the parts of the invention. Said supplemental frame isadvantageously formed by two rearwardly extending arms 5, having jawclips 6 with set screws 7 at their forward ends for attachment to thebottom plate 1. 'ihe supplemental frame may also be secured in otherways, or may form an integral part of the frame of the clipper.

A lifter plate, or automatically operated gage plates is located beneaththe clipper, its forward comb edge 9 normally lying close to the forwardpart of the bottom plate 1. Rearwardly extending side arms 10 on thislifter plate pass adjacent the inner sides of the frame arms 5, and arehinged thereto by pins 11.

In the supporting arms 5 behind the hinge 1s a fixed axle 12, androtatable thereon is a hollow traction roller 13, dapted to roll uponthe scalp. Duplicate s iral cams are united with the ends of thisQiollerby havlng their grooves 14 cut therein, and engaging these grooves arefollower lugs 15 bent inward from the ends of the arms 10.

A spiral spring 16 inside the roller has one end secured thereto and theother end fastened to the axle.

When the clipper is passed upward at the back of the head with theroller bearing thereon, the cam revolved by the roller swings the lifterplate through the followers, causing its forward edge to separateprogressively from the bottom plate of the longer as'the movementproceeds. When the clipper is removed, the spring in the rollerautomatically restores the roller and the cam, and thereby the lifterplate.

While the preferred embodiment of the invention has been described indetail, it will be understood that I do not limit myself to the precisedetails and that changes in respect to form, proportion, arrangement andreversals may be made without departing from essentials.

What I claim as new is:

1. Taper cut mechanism for hair-cutters comprising a hinged gage plate,and a roller traction and a spiral cam, with means engaging the cam forcontrolling the lifter plate.

2. Taper cut mechanism for hair-cutters comprising a hinged gage plate,and a roller traction having a spiral cam on its end, with meansengaging the cam for controlling the gaging the cam for controlling thelifter plate, and a restoring spring in the roller.

4. Taper cut mechanism'for hair-cutters comprising a hinged gage plate,a .roller traction at the rear of theplate, suitable means forsupporting the plate and roller under the frame of a clipper, a camoperated by the roller, and a cam-follower connected with the plate.

5. Taper cut mechanism for hair-cutters comprising a hinged gage plate,a roller traction at the rear of the plate, suitable means forsupporting the plate and roller under the frame of a clipper, a camoperated by the roller, a cam-follower connected with the plate, and arestoring spring connected with the cam.

6. Taper cut mechanism for hair-cutters comprising a hinged gage platehaving a follower lug in rear of its hinge, a traction roller behind thehinge, and a spiral groove cam united with the roller and engaged bysaid lug.

7. Taper cut mechanism for hair-clippers comprising a frame having meansfor attaching it below and rearwardly to the frame of a clipper, a gageplate hinged in said 8. I11 combination with a hair-clipper, a

hinged gage plate beneath the clipper, a roller traction journaledbehind the hinge, a spiral cam united with the roller and acting uponthe plate, and a restoring spring connected with the cam and roller.

9. In a hair-clipper, rearWardly-extending frame arms on the base of theclipper, a gage plate hinged in said arms, a traction roller with spiralcam journaled therein to operate the plate, and a restoring springconnected with the roller and cam.

ISAAC S. KAUFMAN.

